/****************************************************************************
 *
 * Copyright 2016 Samsung Electronics All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific
 * language governing permissions and limitations under the License.
 *
 ****************************************************************************/

/*
 *  Error message information
 *
 *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
 *  SPDX-License-Identifier: Apache-2.0
 *
 *  Licensed under the Apache License, Version 2.0 (the "License"); you may
 *  not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *  This file is part of mbed TLS (https://tls.mbed.org)
 */

#include "tls/config.h"

#if defined(MBEDTLS_ERROR_C) || defined(MBEDTLS_ERROR_STRERROR_DUMMY)
#include "tls/error.h"
#include <string.h>
#endif

#if defined(MBEDTLS_PLATFORM_C)
#include "tls/platform.h"
#else
#define mbedtls_snprintf snprintf
#endif

#if defined(MBEDTLS_ERROR_C)

#include <stdio.h>

#if defined(MBEDTLS_AES_C)
#include "tls/aes.h"
#endif

#if defined(MBEDTLS_BASE64_C)
#include "tls/base64.h"
#endif

#if defined(MBEDTLS_BIGNUM_C)
#include "tls/bignum.h"
#endif

#if defined(MBEDTLS_BLOWFISH_C)
#include "tls/blowfish.h"
#endif

#if defined(MBEDTLS_CAMELLIA_C)
#include "tls/camellia.h"
#endif

#if defined(MBEDTLS_CCM_C)
#include "tls/ccm.h"
#endif

#if defined(MBEDTLS_CIPHER_C)
#include "tls/cipher.h"
#endif

#if defined(MBEDTLS_CTR_DRBG_C)
#include "tls/ctr_drbg.h"
#endif

#if defined(MBEDTLS_DES_C)
#include "tls/des.h"
#endif

#if defined(MBEDTLS_DHM_C)
#include "tls/dhm.h"
#endif

#if defined(MBEDTLS_ECP_C)
#include "tls/ecp.h"
#endif

#if defined(MBEDTLS_ENTROPY_C)
#include "tls/entropy.h"
#endif

#if defined(MBEDTLS_GCM_C)
#include "tls/gcm.h"
#endif

#if defined(MBEDTLS_HMAC_DRBG_C)
#include "tls/hmac_drbg.h"
#endif

#if defined(MBEDTLS_MD_C)
#include "tls/md.h"
#endif

#if defined(MBEDTLS_NET_C)
#include "tls/net.h"
#endif

#if defined(MBEDTLS_OID_C)
#include "tls/oid.h"
#endif

#if defined(MBEDTLS_PADLOCK_C)
#include "tls/padlock.h"
#endif

#if defined(MBEDTLS_PEM_PARSE_C) || defined(MBEDTLS_PEM_WRITE_C)
#include "tls/pem.h"
#endif

#if defined(MBEDTLS_PK_C)
#include "tls/pk.h"
#endif

#if defined(MBEDTLS_PKCS12_C)
#include "tls/pkcs12.h"
#endif

#if defined(MBEDTLS_PKCS5_C)
#include "tls/pkcs5.h"
#endif

#if defined(MBEDTLS_RSA_C)
#include "tls/rsa.h"
#endif

#if defined(MBEDTLS_SSL_TLS_C)
#include "tls/ssl.h"
#endif

#if defined(MBEDTLS_THREADING_C)
#include "tls/threading.h"
#endif

#if defined(MBEDTLS_X509_USE_C) || defined(MBEDTLS_X509_CREATE_C)
#include "tls/x509.h"
#endif

#if defined(MBEDTLS_XTEA_C)
#include "tls/xtea.h"
#endif

void mbedtls_strerror(int ret, char *buf, size_t buflen)
{
	size_t len;
	int use_ret;

	if (buflen == 0) {
		return;
	}

	memset(buf, 0x00, buflen);

	if (ret < 0) {
		ret = -ret;
	}

	if (ret & 0xFF80) {
		use_ret = ret & 0xFF80;

		// High level error codes
		//
		// BEGIN generated code
#if defined(MBEDTLS_CIPHER_C)
		if (use_ret == -(MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE)) {
			mbedtls_snprintf(buf, buflen, "CIPHER - The selected feature is not available");
		}
		if (use_ret == -(MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA)) {
			mbedtls_snprintf(buf, buflen, "CIPHER - Bad input parameters to function");
		}
		if (use_ret == -(MBEDTLS_ERR_CIPHER_ALLOC_FAILED)) {
			mbedtls_snprintf(buf, buflen, "CIPHER - Failed to allocate memory");
		}
		if (use_ret == -(MBEDTLS_ERR_CIPHER_INVALID_PADDING)) {
			mbedtls_snprintf(buf, buflen, "CIPHER - Input data contains invalid padding and is rejected");
		}
		if (use_ret == -(MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED)) {
			mbedtls_snprintf(buf, buflen, "CIPHER - Decryption of block requires a full block");
		}
		if (use_ret == -(MBEDTLS_ERR_CIPHER_AUTH_FAILED)) {
			mbedtls_snprintf(buf, buflen, "CIPHER - Authentication failed (for AEAD modes)");
		}
		if (use_ret == -(MBEDTLS_ERR_CIPHER_INVALID_CONTEXT)) {
			mbedtls_snprintf(buf, buflen, "CIPHER - The context is invalid, eg because it was free()ed");
		}
#endif							/* MBEDTLS_CIPHER_C */

#if defined(MBEDTLS_DHM_C)
		if (use_ret == -(MBEDTLS_ERR_DHM_BAD_INPUT_DATA)) {
			mbedtls_snprintf(buf, buflen, "DHM - Bad input parameters to function");
		}
		if (use_ret == -(MBEDTLS_ERR_DHM_READ_PARAMS_FAILED)) {
			mbedtls_snprintf(buf, buflen, "DHM - Reading of the DHM parameters failed");
		}
		if (use_ret == -(MBEDTLS_ERR_DHM_MAKE_PARAMS_FAILED)) {
			mbedtls_snprintf(buf, buflen, "DHM - Making of the DHM parameters failed");
		}
		if (use_ret == -(MBEDTLS_ERR_DHM_READ_PUBLIC_FAILED)) {
			mbedtls_snprintf(buf, buflen, "DHM - Reading of the public values failed");
		}
		if (use_ret == -(MBEDTLS_ERR_DHM_MAKE_PUBLIC_FAILED)) {
			mbedtls_snprintf(buf, buflen, "DHM - Making of the public value failed");
		}
		if (use_ret == -(MBEDTLS_ERR_DHM_CALC_SECRET_FAILED)) {
			mbedtls_snprintf(buf, buflen, "DHM - Calculation of the DHM secret failed");
		}
		if (use_ret == -(MBEDTLS_ERR_DHM_INVALID_FORMAT)) {
			mbedtls_snprintf(buf, buflen, "DHM - The ASN.1 data is not formatted correctly");
		}
		if (use_ret == -(MBEDTLS_ERR_DHM_ALLOC_FAILED)) {
			mbedtls_snprintf(buf, buflen, "DHM - Allocation of memory failed");
		}
		if (use_ret == -(MBEDTLS_ERR_DHM_FILE_IO_ERROR)) {
			mbedtls_snprintf(buf, buflen, "DHM - Read/write of file failed");
		}
#endif							/* MBEDTLS_DHM_C */

#if defined(MBEDTLS_ECP_C)
		if (use_ret == -(MBEDTLS_ERR_ECP_BAD_INPUT_DATA)) {
			mbedtls_snprintf(buf, buflen, "ECP - Bad input parameters to function");
		}
		if (use_ret == -(MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL)) {
			mbedtls_snprintf(buf, buflen, "ECP - The buffer is too small to write to");
		}
		if (use_ret == -(MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE)) {
			mbedtls_snprintf(buf, buflen, "ECP - Requested curve not available");
		}
		if (use_ret == -(MBEDTLS_ERR_ECP_VERIFY_FAILED)) {
			mbedtls_snprintf(buf, buflen, "ECP - The signature is not valid");
		}
		if (use_ret == -(MBEDTLS_ERR_ECP_ALLOC_FAILED)) {
			mbedtls_snprintf(buf, buflen, "ECP - Memory allocation failed");
		}
		if (use_ret == -(MBEDTLS_ERR_ECP_RANDOM_FAILED)) {
			mbedtls_snprintf(buf, buflen, "ECP - Generation of random value, such as (ephemeral) key, failed");
		}
		if (use_ret == -(MBEDTLS_ERR_ECP_INVALID_KEY)) {
			mbedtls_snprintf(buf, buflen, "ECP - Invalid private or public key");
		}
		if (use_ret == -(MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH)) {
			mbedtls_snprintf(buf, buflen, "ECP - Signature is valid but shorter than the user-supplied length");
		}
#endif							/* MBEDTLS_ECP_C */

#if defined(MBEDTLS_MD_C)
		if (use_ret == -(MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE)) {
			mbedtls_snprintf(buf, buflen, "MD - The selected feature is not available");
		}
		if (use_ret == -(MBEDTLS_ERR_MD_BAD_INPUT_DATA)) {
			mbedtls_snprintf(buf, buflen, "MD - Bad input parameters to function");
		}
		if (use_ret == -(MBEDTLS_ERR_MD_ALLOC_FAILED)) {
			mbedtls_snprintf(buf, buflen, "MD - Failed to allocate memory");
		}
		if (use_ret == -(MBEDTLS_ERR_MD_FILE_IO_ERROR)) {
			mbedtls_snprintf(buf, buflen, "MD - Opening or reading of file failed");
		}
#endif							/* MBEDTLS_MD_C */

#if defined(MBEDTLS_PEM_PARSE_C) || defined(MBEDTLS_PEM_WRITE_C)
		if (use_ret == -(MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT)) {
			mbedtls_snprintf(buf, buflen, "PEM - No PEM header or footer found");
		}
		if (use_ret == -(MBEDTLS_ERR_PEM_INVALID_DATA)) {
			mbedtls_snprintf(buf, buflen, "PEM - PEM string is not as expected");
		}
		if (use_ret == -(MBEDTLS_ERR_PEM_ALLOC_FAILED)) {
			mbedtls_snprintf(buf, buflen, "PEM - Failed to allocate memory");
		}
		if (use_ret == -(MBEDTLS_ERR_PEM_INVALID_ENC_IV)) {
			mbedtls_snprintf(buf, buflen, "PEM - RSA IV is not in hex-format");
		}
		if (use_ret == -(MBEDTLS_ERR_PEM_UNKNOWN_ENC_ALG)) {
			mbedtls_snprintf(buf, buflen, "PEM - Unsupported key encryption algorithm");
		}
		if (use_ret == -(MBEDTLS_ERR_PEM_PASSWORD_REQUIRED)) {
			mbedtls_snprintf(buf, buflen, "PEM - Private key password can't be empty");
		}
		if (use_ret == -(MBEDTLS_ERR_PEM_PASSWORD_MISMATCH)) {
			mbedtls_snprintf(buf, buflen, "PEM - Given private key password does not allow for correct decryption");
		}
		if (use_ret == -(MBEDTLS_ERR_PEM_FEATURE_UNAVAILABLE)) {
			mbedtls_snprintf(buf, buflen, "PEM - Unavailable feature, e.g. hashing/encryption combination");
		}
		if (use_ret == -(MBEDTLS_ERR_PEM_BAD_INPUT_DATA)) {
			mbedtls_snprintf(buf, buflen, "PEM - Bad input parameters to function");
		}
#endif							/* MBEDTLS_PEM_PARSE_C || MBEDTLS_PEM_WRITE_C */

#if defined(MBEDTLS_PK_C)
		if (use_ret == -(MBEDTLS_ERR_PK_ALLOC_FAILED)) {
			mbedtls_snprintf(buf, buflen, "PK - Memory allocation failed");
		}
		if (use_ret == -(MBEDTLS_ERR_PK_TYPE_MISMATCH)) {
			mbedtls_snprintf(buf, buflen, "PK - Type mismatch, eg attempt to encrypt with an ECDSA key");
		}
		if (use_ret == -(MBEDTLS_ERR_PK_BAD_INPUT_DATA)) {
			mbedtls_snprintf(buf, buflen, "PK - Bad input parameters to function");
		}
		if (use_ret == -(MBEDTLS_ERR_PK_FILE_IO_ERROR)) {
			mbedtls_snprintf(buf, buflen, "PK - Read/write of file failed");
		}
		if (use_ret == -(MBEDTLS_ERR_PK_KEY_INVALID_VERSION)) {
			mbedtls_snprintf(buf, buflen, "PK - Unsupported key version");
		}
		if (use_ret == -(MBEDTLS_ERR_PK_KEY_INVALID_FORMAT)) {
			mbedtls_snprintf(buf, buflen, "PK - Invalid key tag or value");
		}
		if (use_ret == -(MBEDTLS_ERR_PK_UNKNOWN_PK_ALG)) {
			mbedtls_snprintf(buf, buflen, "PK - Key algorithm is unsupported (only RSA and EC are supported)");
		}
		if (use_ret == -(MBEDTLS_ERR_PK_PASSWORD_REQUIRED)) {
			mbedtls_snprintf(buf, buflen, "PK - Private key password can't be empty");
		}
		if (use_ret == -(MBEDTLS_ERR_PK_PASSWORD_MISMATCH)) {
			mbedtls_snprintf(buf, buflen, "PK - Given private key password does not allow for correct decryption");
		}
		if (use_ret == -(MBEDTLS_ERR_PK_INVALID_PUBKEY)) {
			mbedtls_snprintf(buf, buflen, "PK - The pubkey tag or value is invalid (only RSA and EC are supported)");
		}
		if (use_ret == -(MBEDTLS_ERR_PK_INVALID_ALG)) {
			mbedtls_snprintf(buf, buflen, "PK - The algorithm tag or value is invalid");
		}
		if (use_ret == -(MBEDTLS_ERR_PK_UNKNOWN_NAMED_CURVE)) {
			mbedtls_snprintf(buf, buflen, "PK - Elliptic curve is unsupported (only NIST curves are supported)");
		}
		if (use_ret == -(MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE)) {
			mbedtls_snprintf(buf, buflen, "PK - Unavailable feature, e.g. RSA disabled for RSA key");
		}
		if (use_ret == -(MBEDTLS_ERR_PK_SIG_LEN_MISMATCH)) {
			mbedtls_snprintf(buf, buflen, "PK - The signature is valid but its length is less than expected");
		}
#endif							/* MBEDTLS_PK_C */

#if defined(MBEDTLS_PKCS12_C)
		if (use_ret == -(MBEDTLS_ERR_PKCS12_BAD_INPUT_DATA)) {
			mbedtls_snprintf(buf, buflen, "PKCS12 - Bad input parameters to function");
		}
		if (use_ret == -(MBEDTLS_ERR_PKCS12_FEATURE_UNAVAILABLE)) {
			mbedtls_snprintf(buf, buflen, "PKCS12 - Feature not available, e.g. unsupported encryption scheme");
		}
		if (use_ret == -(MBEDTLS_ERR_PKCS12_PBE_INVALID_FORMAT)) {
			mbedtls_snprintf(buf, buflen, "PKCS12 - PBE ASN.1 data not as expected");
		}
		if (use_ret == -(MBEDTLS_ERR_PKCS12_PASSWORD_MISMATCH)) {
			mbedtls_snprintf(buf, buflen, "PKCS12 - Given private key password does not allow for correct decryption");
		}
#endif							/* MBEDTLS_PKCS12_C */

#if defined(MBEDTLS_PKCS5_C)
		if (use_ret == -(MBEDTLS_ERR_PKCS5_BAD_INPUT_DATA)) {
			mbedtls_snprintf(buf, buflen, "PKCS5 - Bad input parameters to function");
		}
		if (use_ret == -(MBEDTLS_ERR_PKCS5_INVALID_FORMAT)) {
			mbedtls_snprintf(buf, buflen, "PKCS5 - Unexpected ASN.1 data");
		}
		if (use_ret == -(MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE)) {
			mbedtls_snprintf(buf, buflen, "PKCS5 - Requested encryption or digest alg not available");
		}
		if (use_ret == -(MBEDTLS_ERR_PKCS5_PASSWORD_MISMATCH)) {
			mbedtls_snprintf(buf, buflen, "PKCS5 - Given private key password does not allow for correct decryption");
		}
#endif							/* MBEDTLS_PKCS5_C */

#if defined(MBEDTLS_RSA_C)
		if (use_ret == -(MBEDTLS_ERR_RSA_BAD_INPUT_DATA)) {
			mbedtls_snprintf(buf, buflen, "RSA - Bad input parameters to function");
		}
		if (use_ret == -(MBEDTLS_ERR_RSA_INVALID_PADDING)) {
			mbedtls_snprintf(buf, buflen, "RSA - Input data contains invalid padding and is rejected");
		}
		if (use_ret == -(MBEDTLS_ERR_RSA_KEY_GEN_FAILED)) {
			mbedtls_snprintf(buf, buflen, "RSA - Something failed during generation of a key");
		}
		if (use_ret == -(MBEDTLS_ERR_RSA_KEY_CHECK_FAILED)) {
			mbedtls_snprintf(buf, buflen, "RSA - Key failed to pass the library's validity check");
		}
		if (use_ret == -(MBEDTLS_ERR_RSA_PUBLIC_FAILED)) {
			mbedtls_snprintf(buf, buflen, "RSA - The public key operation failed");
		}
		if (use_ret == -(MBEDTLS_ERR_RSA_PRIVATE_FAILED)) {
			mbedtls_snprintf(buf, buflen, "RSA - The private key operation failed");
		}
		if (use_ret == -(MBEDTLS_ERR_RSA_VERIFY_FAILED)) {
			mbedtls_snprintf(buf, buflen, "RSA - The PKCS#1 verification failed");
		}
		if (use_ret == -(MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE)) {
			mbedtls_snprintf(buf, buflen, "RSA - The output buffer for decryption is not large enough");
		}
		if (use_ret == -(MBEDTLS_ERR_RSA_RNG_FAILED)) {
			mbedtls_snprintf(buf, buflen, "RSA - The random generator failed to generate non-zeros");
		}
#endif							/* MBEDTLS_RSA_C */

#if defined(MBEDTLS_SSL_TLS_C)
		if (use_ret == -(MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE)) {
			mbedtls_snprintf(buf, buflen, "SSL - The requested feature is not available");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_BAD_INPUT_DATA)) {
			mbedtls_snprintf(buf, buflen, "SSL - Bad input parameters to function");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_INVALID_MAC)) {
			mbedtls_snprintf(buf, buflen, "SSL - Verification of the message MAC failed");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_INVALID_RECORD)) {
			mbedtls_snprintf(buf, buflen, "SSL - An invalid SSL record was received");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_CONN_EOF)) {
			mbedtls_snprintf(buf, buflen, "SSL - The connection indicated an EOF");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_UNKNOWN_CIPHER)) {
			mbedtls_snprintf(buf, buflen, "SSL - An unknown cipher was received");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_NO_CIPHER_CHOSEN)) {
			mbedtls_snprintf(buf, buflen, "SSL - The server has no ciphersuites in common with the client");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_NO_RNG)) {
			mbedtls_snprintf(buf, buflen, "SSL - No RNG was provided to the SSL module");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_NO_CLIENT_CERTIFICATE)) {
			mbedtls_snprintf(buf, buflen, "SSL - No client certification received from the client, but required by the authentication mode");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_CERTIFICATE_TOO_LARGE)) {
			mbedtls_snprintf(buf, buflen, "SSL - Our own certificate(s) is/are too large to send in an SSL message");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_CERTIFICATE_REQUIRED)) {
			mbedtls_snprintf(buf, buflen, "SSL - The own certificate is not set, but needed by the server");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_PRIVATE_KEY_REQUIRED)) {
			mbedtls_snprintf(buf, buflen, "SSL - The own private key or pre-shared key is not set, but needed");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_CA_CHAIN_REQUIRED)) {
			mbedtls_snprintf(buf, buflen, "SSL - No CA Chain is set, but required to operate");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE)) {
			mbedtls_snprintf(buf, buflen, "SSL - An unexpected message was received from our peer");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_FATAL_ALERT_MESSAGE)) {
			mbedtls_snprintf(buf, buflen, "SSL - A fatal alert message was received from our peer");
			return;
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_PEER_VERIFY_FAILED)) {
			mbedtls_snprintf(buf, buflen, "SSL - Verification of our peer failed");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY)) {
			mbedtls_snprintf(buf, buflen, "SSL - The peer notified us that the connection is going to be closed");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO)) {
			mbedtls_snprintf(buf, buflen, "SSL - Processing of the ClientHello handshake message failed");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO)) {
			mbedtls_snprintf(buf, buflen, "SSL - Processing of the ServerHello handshake message failed");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE)) {
			mbedtls_snprintf(buf, buflen, "SSL - Processing of the Certificate handshake message failed");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_REQUEST)) {
			mbedtls_snprintf(buf, buflen, "SSL - Processing of the CertificateRequest handshake message failed");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_SERVER_KEY_EXCHANGE)) {
			mbedtls_snprintf(buf, buflen, "SSL - Processing of the ServerKeyExchange handshake message failed");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO_DONE)) {
			mbedtls_snprintf(buf, buflen, "SSL - Processing of the ServerHelloDone handshake message failed");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE)) {
			mbedtls_snprintf(buf, buflen, "SSL - Processing of the ClientKeyExchange handshake message failed");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_RP)) {
			mbedtls_snprintf(buf, buflen, "SSL - Processing of the ClientKeyExchange handshake message failed in DHM / ECDH Read Public");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_CS)) {
			mbedtls_snprintf(buf, buflen, "SSL - Processing of the ClientKeyExchange handshake message failed in DHM / ECDH Calculate Secret");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY)) {
			mbedtls_snprintf(buf, buflen, "SSL - Processing of the CertificateVerify handshake message failed");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CHANGE_CIPHER_SPEC)) {
			mbedtls_snprintf(buf, buflen, "SSL - Processing of the ChangeCipherSpec handshake message failed");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_FINISHED)) {
			mbedtls_snprintf(buf, buflen, "SSL - Processing of the Finished handshake message failed");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_ALLOC_FAILED)) {
			mbedtls_snprintf(buf, buflen, "SSL - Memory allocation failed");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_HW_ACCEL_FAILED)) {
			mbedtls_snprintf(buf, buflen, "SSL - Hardware acceleration function returned with error");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_HW_ACCEL_FALLTHROUGH)) {
			mbedtls_snprintf(buf, buflen, "SSL - Hardware acceleration function skipped / left alone data");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_COMPRESSION_FAILED)) {
			mbedtls_snprintf(buf, buflen, "SSL - Processing of the compression / decompression failed");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_PROTOCOL_VERSION)) {
			mbedtls_snprintf(buf, buflen, "SSL - Handshake protocol not within min/max boundaries");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_NEW_SESSION_TICKET)) {
			mbedtls_snprintf(buf, buflen, "SSL - Processing of the NewSessionTicket handshake message failed");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_SESSION_TICKET_EXPIRED)) {
			mbedtls_snprintf(buf, buflen, "SSL - Session ticket has expired");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_PK_TYPE_MISMATCH)) {
			mbedtls_snprintf(buf, buflen, "SSL - Public key type mismatch (eg, asked for RSA key exchange and presented EC key)");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_UNKNOWN_IDENTITY)) {
			mbedtls_snprintf(buf, buflen, "SSL - Unknown identity received (eg, PSK identity)");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_INTERNAL_ERROR)) {
			mbedtls_snprintf(buf, buflen, "SSL - Internal error (eg, unexpected failure in lower-level module)");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_COUNTER_WRAPPING)) {
			mbedtls_snprintf(buf, buflen, "SSL - A counter would wrap (eg, too many messages exchanged)");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_WAITING_SERVER_HELLO_RENEGO)) {
			mbedtls_snprintf(buf, buflen, "SSL - Unexpected message at ServerHello in renegotiation");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED)) {
			mbedtls_snprintf(buf, buflen, "SSL - DTLS client must retry for hello verification");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL)) {
			mbedtls_snprintf(buf, buflen, "SSL - A buffer is too small to receive or write a message");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_NO_USABLE_CIPHERSUITE)) {
			mbedtls_snprintf(buf, buflen, "SSL - None of the common ciphersuites is usable (eg, no suitable certificate, see debug messages)");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_WANT_READ)) {
			mbedtls_snprintf(buf, buflen, "SSL - Connection requires a read call");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_WANT_WRITE)) {
			mbedtls_snprintf(buf, buflen, "SSL - Connection requires a write call");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_TIMEOUT)) {
			mbedtls_snprintf(buf, buflen, "SSL - The operation timed out");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_CLIENT_RECONNECT)) {
			mbedtls_snprintf(buf, buflen, "SSL - The client initiated a reconnect from the same port");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_UNEXPECTED_RECORD)) {
			mbedtls_snprintf(buf, buflen, "SSL - Record header looks valid but is not expected");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_NON_FATAL)) {
			mbedtls_snprintf(buf, buflen, "SSL - The alert message received indicates a non-fatal error");
		}
		if (use_ret == -(MBEDTLS_ERR_SSL_INVALID_VERIFY_HASH)) {
			mbedtls_snprintf(buf, buflen, "SSL - Couldn't set the hash for verifying CertificateVerify");
		}
#endif							/* MBEDTLS_SSL_TLS_C */

#if defined(MBEDTLS_X509_USE_C) || defined(MBEDTLS_X509_CREATE_C)
		if (use_ret == -(MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE)) {
			mbedtls_snprintf(buf, buflen, "X509 - Unavailable feature, e.g. RSA hashing/encryption combination");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_UNKNOWN_OID)) {
			mbedtls_snprintf(buf, buflen, "X509 - Requested OID is unknown");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_INVALID_FORMAT)) {
			mbedtls_snprintf(buf, buflen, "X509 - The CRT/CRL/CSR format is invalid, e.g. different type expected");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_INVALID_VERSION)) {
			mbedtls_snprintf(buf, buflen, "X509 - The CRT/CRL/CSR version element is invalid");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_INVALID_SERIAL)) {
			mbedtls_snprintf(buf, buflen, "X509 - The serial tag or value is invalid");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_INVALID_ALG)) {
			mbedtls_snprintf(buf, buflen, "X509 - The algorithm tag or value is invalid");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_INVALID_NAME)) {
			mbedtls_snprintf(buf, buflen, "X509 - The name tag or value is invalid");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_INVALID_DATE)) {
			mbedtls_snprintf(buf, buflen, "X509 - The date tag or value is invalid");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_INVALID_SIGNATURE)) {
			mbedtls_snprintf(buf, buflen, "X509 - The signature tag or value invalid");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_INVALID_EXTENSIONS)) {
			mbedtls_snprintf(buf, buflen, "X509 - The extension tag or value is invalid");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_UNKNOWN_VERSION)) {
			mbedtls_snprintf(buf, buflen, "X509 - CRT/CRL/CSR has an unsupported version number");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_UNKNOWN_SIG_ALG)) {
			mbedtls_snprintf(buf, buflen, "X509 - Signature algorithm (oid) is unsupported");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_SIG_MISMATCH)) {
			mbedtls_snprintf(buf, buflen, "X509 - Signature algorithms do not match. (see \\c ::mbedtls_x509_crt sig_oid)");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_CERT_VERIFY_FAILED)) {
			mbedtls_snprintf(buf, buflen, "X509 - Certificate verification failed, e.g. CRL, CA or signature check failed");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_CERT_UNKNOWN_FORMAT)) {
			mbedtls_snprintf(buf, buflen, "X509 - Format not recognized as DER or PEM");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_BAD_INPUT_DATA)) {
			mbedtls_snprintf(buf, buflen, "X509 - Input invalid");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_ALLOC_FAILED)) {
			mbedtls_snprintf(buf, buflen, "X509 - Allocation of memory failed");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_FILE_IO_ERROR)) {
			mbedtls_snprintf(buf, buflen, "X509 - Read/write of file failed");
		}
		if (use_ret == -(MBEDTLS_ERR_X509_BUFFER_TOO_SMALL)) {
			mbedtls_snprintf(buf, buflen, "X509 - Destination buffer is too small");
		}
#endif							/* MBEDTLS_X509_USE_C || MBEDTLS_X509_CREATE_C */
		// END generated code

		if (strlen(buf) == 0) {
			mbedtls_snprintf(buf, buflen, "UNKNOWN ERROR CODE (%04X)", use_ret);
		}
	}

	use_ret = ret & ~0xFF80;

	if (use_ret == 0) {
		return;
	}
	// If high level code is present, make a concatenation between both
	// error strings.
	//
	len = strlen(buf);

	if (len > 0) {
		if (buflen - len < 5) {
			return;
		}

		mbedtls_snprintf(buf + len, buflen - len, " : ");

		buf += len + 3;
		buflen -= len + 3;
	}
	// Low level error codes
	//
	// BEGIN generated code
#if defined(MBEDTLS_AES_C)
	if (use_ret == -(MBEDTLS_ERR_AES_INVALID_KEY_LENGTH)) {
		mbedtls_snprintf(buf, buflen, "AES - Invalid key length");
	}
	if (use_ret == -(MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH)) {
		mbedtls_snprintf(buf, buflen, "AES - Invalid data input length");
	}
#endif							/* MBEDTLS_AES_C */

#if defined(MBEDTLS_ASN1_PARSE_C)
	if (use_ret == -(MBEDTLS_ERR_ASN1_OUT_OF_DATA)) {
		mbedtls_snprintf(buf, buflen, "ASN1 - Out of data when parsing an ASN1 data structure");
	}
	if (use_ret == -(MBEDTLS_ERR_ASN1_UNEXPECTED_TAG)) {
		mbedtls_snprintf(buf, buflen, "ASN1 - ASN1 tag was of an unexpected value");
	}
	if (use_ret == -(MBEDTLS_ERR_ASN1_INVALID_LENGTH)) {
		mbedtls_snprintf(buf, buflen, "ASN1 - Error when trying to determine the length or invalid length");
	}
	if (use_ret == -(MBEDTLS_ERR_ASN1_LENGTH_MISMATCH)) {
		mbedtls_snprintf(buf, buflen, "ASN1 - Actual length differs from expected length");
	}
	if (use_ret == -(MBEDTLS_ERR_ASN1_INVALID_DATA)) {
		mbedtls_snprintf(buf, buflen, "ASN1 - Data is invalid. (not used)");
	}
	if (use_ret == -(MBEDTLS_ERR_ASN1_ALLOC_FAILED)) {
		mbedtls_snprintf(buf, buflen, "ASN1 - Memory allocation failed");
	}
	if (use_ret == -(MBEDTLS_ERR_ASN1_BUF_TOO_SMALL)) {
		mbedtls_snprintf(buf, buflen, "ASN1 - Buffer too small when writing ASN.1 data structure");
	}
#endif							/* MBEDTLS_ASN1_PARSE_C */

#if defined(MBEDTLS_BASE64_C)
	if (use_ret == -(MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL)) {
		mbedtls_snprintf(buf, buflen, "BASE64 - Output buffer too small");
	}
	if (use_ret == -(MBEDTLS_ERR_BASE64_INVALID_CHARACTER)) {
		mbedtls_snprintf(buf, buflen, "BASE64 - Invalid character in input");
	}
#endif							/* MBEDTLS_BASE64_C */

#if defined(MBEDTLS_BIGNUM_C)
	if (use_ret == -(MBEDTLS_ERR_MPI_FILE_IO_ERROR)) {
		mbedtls_snprintf(buf, buflen, "BIGNUM - An error occurred while reading from or writing to a file");
	}
	if (use_ret == -(MBEDTLS_ERR_MPI_BAD_INPUT_DATA)) {
		mbedtls_snprintf(buf, buflen, "BIGNUM - Bad input parameters to function");
	}
	if (use_ret == -(MBEDTLS_ERR_MPI_INVALID_CHARACTER)) {
		mbedtls_snprintf(buf, buflen, "BIGNUM - There is an invalid character in the digit string");
	}
	if (use_ret == -(MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL)) {
		mbedtls_snprintf(buf, buflen, "BIGNUM - The buffer is too small to write to");
	}
	if (use_ret == -(MBEDTLS_ERR_MPI_NEGATIVE_VALUE)) {
		mbedtls_snprintf(buf, buflen, "BIGNUM - The input arguments are negative or result in illegal output");
	}
	if (use_ret == -(MBEDTLS_ERR_MPI_DIVISION_BY_ZERO)) {
		mbedtls_snprintf(buf, buflen, "BIGNUM - The input argument for division is zero, which is not allowed");
	}
	if (use_ret == -(MBEDTLS_ERR_MPI_NOT_ACCEPTABLE)) {
		mbedtls_snprintf(buf, buflen, "BIGNUM - The input arguments are not acceptable");
	}
	if (use_ret == -(MBEDTLS_ERR_MPI_ALLOC_FAILED)) {
		mbedtls_snprintf(buf, buflen, "BIGNUM - Memory allocation failed");
	}
#endif							/* MBEDTLS_BIGNUM_C */

#if defined(MBEDTLS_BLOWFISH_C)
	if (use_ret == -(MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH)) {
		mbedtls_snprintf(buf, buflen, "BLOWFISH - Invalid key length");
	}
	if (use_ret == -(MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH)) {
		mbedtls_snprintf(buf, buflen, "BLOWFISH - Invalid data input length");
	}
#endif							/* MBEDTLS_BLOWFISH_C */

#if defined(MBEDTLS_CAMELLIA_C)
	if (use_ret == -(MBEDTLS_ERR_CAMELLIA_INVALID_KEY_LENGTH)) {
		mbedtls_snprintf(buf, buflen, "CAMELLIA - Invalid key length");
	}
	if (use_ret == -(MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH)) {
		mbedtls_snprintf(buf, buflen, "CAMELLIA - Invalid data input length");
	}
#endif							/* MBEDTLS_CAMELLIA_C */

#if defined(MBEDTLS_CCM_C)
	if (use_ret == -(MBEDTLS_ERR_CCM_BAD_INPUT)) {
		mbedtls_snprintf(buf, buflen, "CCM - Bad input parameters to function");
	}
	if (use_ret == -(MBEDTLS_ERR_CCM_AUTH_FAILED)) {
		mbedtls_snprintf(buf, buflen, "CCM - Authenticated decryption failed");
	}
#endif							/* MBEDTLS_CCM_C */

#if defined(MBEDTLS_CTR_DRBG_C)
	if (use_ret == -(MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED)) {
		mbedtls_snprintf(buf, buflen, "CTR_DRBG - The entropy source failed");
	}
	if (use_ret == -(MBEDTLS_ERR_CTR_DRBG_REQUEST_TOO_BIG)) {
		mbedtls_snprintf(buf, buflen, "CTR_DRBG - Too many random requested in single call");
	}
	if (use_ret == -(MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG)) {
		mbedtls_snprintf(buf, buflen, "CTR_DRBG - Input too large (Entropy + additional)");
	}
	if (use_ret == -(MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR)) {
		mbedtls_snprintf(buf, buflen, "CTR_DRBG - Read/write error in file");
	}
#endif							/* MBEDTLS_CTR_DRBG_C */

#if defined(MBEDTLS_DES_C)
	if (use_ret == -(MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH)) {
		mbedtls_snprintf(buf, buflen, "DES - The data input has an invalid length");
	}
#endif							/* MBEDTLS_DES_C */

#if defined(MBEDTLS_ENTROPY_C)
	if (use_ret == -(MBEDTLS_ERR_ENTROPY_SOURCE_FAILED)) {
		mbedtls_snprintf(buf, buflen, "ENTROPY - Critical entropy source failure");
	}
	if (use_ret == -(MBEDTLS_ERR_ENTROPY_MAX_SOURCES)) {
		mbedtls_snprintf(buf, buflen, "ENTROPY - No more sources can be added");
	}
	if (use_ret == -(MBEDTLS_ERR_ENTROPY_NO_SOURCES_DEFINED)) {
		mbedtls_snprintf(buf, buflen, "ENTROPY - No sources have been added to poll");
	}
	if (use_ret == -(MBEDTLS_ERR_ENTROPY_NO_STRONG_SOURCE)) {
		mbedtls_snprintf(buf, buflen, "ENTROPY - No strong sources have been added to poll");
	}
	if (use_ret == -(MBEDTLS_ERR_ENTROPY_FILE_IO_ERROR)) {
		mbedtls_snprintf(buf, buflen, "ENTROPY - Read/write error in file");
	}
#endif							/* MBEDTLS_ENTROPY_C */

#if defined(MBEDTLS_GCM_C)
	if (use_ret == -(MBEDTLS_ERR_GCM_AUTH_FAILED)) {
		mbedtls_snprintf(buf, buflen, "GCM - Authenticated decryption failed");
	}
	if (use_ret == -(MBEDTLS_ERR_GCM_BAD_INPUT)) {
		mbedtls_snprintf(buf, buflen, "GCM - Bad input parameters to function");
	}
#endif							/* MBEDTLS_GCM_C */

#if defined(MBEDTLS_HMAC_DRBG_C)
	if (use_ret == -(MBEDTLS_ERR_HMAC_DRBG_REQUEST_TOO_BIG)) {
		mbedtls_snprintf(buf, buflen, "HMAC_DRBG - Too many random requested in single call");
	}
	if (use_ret == -(MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG)) {
		mbedtls_snprintf(buf, buflen, "HMAC_DRBG - Input too large (Entropy + additional)");
	}
	if (use_ret == -(MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR)) {
		mbedtls_snprintf(buf, buflen, "HMAC_DRBG - Read/write error in file");
	}
	if (use_ret == -(MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED)) {
		mbedtls_snprintf(buf, buflen, "HMAC_DRBG - The entropy source failed");
	}
#endif							/* MBEDTLS_HMAC_DRBG_C */

#if defined(MBEDTLS_NET_C)
	if (use_ret == -(MBEDTLS_ERR_NET_SOCKET_FAILED)) {
		mbedtls_snprintf(buf, buflen, "NET - Failed to open a socket");
	}
	if (use_ret == -(MBEDTLS_ERR_NET_CONNECT_FAILED)) {
		mbedtls_snprintf(buf, buflen, "NET - The connection to the given server / port failed");
	}
	if (use_ret == -(MBEDTLS_ERR_NET_BIND_FAILED)) {
		mbedtls_snprintf(buf, buflen, "NET - Binding of the socket failed");
	}
	if (use_ret == -(MBEDTLS_ERR_NET_LISTEN_FAILED)) {
		mbedtls_snprintf(buf, buflen, "NET - Could not listen on the socket");
	}
	if (use_ret == -(MBEDTLS_ERR_NET_ACCEPT_FAILED)) {
		mbedtls_snprintf(buf, buflen, "NET - Could not accept the incoming connection");
	}
	if (use_ret == -(MBEDTLS_ERR_NET_RECV_FAILED)) {
		mbedtls_snprintf(buf, buflen, "NET - Reading information from the socket failed");
	}
	if (use_ret == -(MBEDTLS_ERR_NET_SEND_FAILED)) {
		mbedtls_snprintf(buf, buflen, "NET - Sending information through the socket failed");
	}
	if (use_ret == -(MBEDTLS_ERR_NET_CONN_RESET)) {
		mbedtls_snprintf(buf, buflen, "NET - Connection was reset by peer");
	}
	if (use_ret == -(MBEDTLS_ERR_NET_UNKNOWN_HOST)) {
		mbedtls_snprintf(buf, buflen, "NET - Failed to get an IP address for the given hostname");
	}
	if (use_ret == -(MBEDTLS_ERR_NET_BUFFER_TOO_SMALL)) {
		mbedtls_snprintf(buf, buflen, "NET - Buffer is too small to hold the data");
	}
	if (use_ret == -(MBEDTLS_ERR_NET_INVALID_CONTEXT)) {
		mbedtls_snprintf(buf, buflen, "NET - The context is invalid, eg because it was free()ed");
	}
#endif							/* MBEDTLS_NET_C */

#if defined(MBEDTLS_OID_C)
	if (use_ret == -(MBEDTLS_ERR_OID_NOT_FOUND)) {
		mbedtls_snprintf(buf, buflen, "OID - OID is not found");
	}
	if (use_ret == -(MBEDTLS_ERR_OID_BUF_TOO_SMALL)) {
		mbedtls_snprintf(buf, buflen, "OID - output buffer is too small");
	}
#endif							/* MBEDTLS_OID_C */

#if defined(MBEDTLS_PADLOCK_C)
	if (use_ret == -(MBEDTLS_ERR_PADLOCK_DATA_MISALIGNED)) {
		mbedtls_snprintf(buf, buflen, "PADLOCK - Input data should be aligned");
	}
#endif							/* MBEDTLS_PADLOCK_C */

#if defined(MBEDTLS_THREADING_C)
	if (use_ret == -(MBEDTLS_ERR_THREADING_FEATURE_UNAVAILABLE)) {
		mbedtls_snprintf(buf, buflen, "THREADING - The selected feature is not available");
	}
	if (use_ret == -(MBEDTLS_ERR_THREADING_BAD_INPUT_DATA)) {
		mbedtls_snprintf(buf, buflen, "THREADING - Bad input parameters to function");
	}
	if (use_ret == -(MBEDTLS_ERR_THREADING_MUTEX_ERROR)) {
		mbedtls_snprintf(buf, buflen, "THREADING - Locking / unlocking / free failed with error code");
	}
#endif							/* MBEDTLS_THREADING_C */

#if defined(MBEDTLS_XTEA_C)
	if (use_ret == -(MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH)) {
		mbedtls_snprintf(buf, buflen, "XTEA - The data input has an invalid length");
	}
#endif							/* MBEDTLS_XTEA_C */
	// END generated code

	if (strlen(buf) != 0) {
		return;
	}

	mbedtls_snprintf(buf, buflen, "UNKNOWN ERROR CODE (%04X)", use_ret);
}

#else							/* MBEDTLS_ERROR_C */

#if defined(MBEDTLS_ERROR_STRERROR_DUMMY)

/*
 * Provide an non-function in case MBEDTLS_ERROR_C is not defined
 */
void mbedtls_strerror(int ret, char *buf, size_t buflen)
{
	((void)ret);

	if (buflen > 0) {
		buf[0] = '\0';
	}
}

#endif							/* MBEDTLS_ERROR_STRERROR_DUMMY */

#endif							/* MBEDTLS_ERROR_C */
